I put my foot down in 4th gear and above my 2011 Peugeot 508 throws the check engine light and the cold start crank is way too long. Changed the fuel filter and fuel pressure sensor already but no difference. New battery just fitted as well. Been to 2 different garages who can't diagnose the issue properly. My scan tool shows P0087 error so my research suggests either the fuel filter housing leaks air or the high pressure fuel pump is gone but I need to be sure before just throwing money at it as the pump cost a small fortune and I was told the belt has to come out. Toomey Basildon couldn't be bothered to pick up their phones 2 days in a row now so can you recommend anybody in Essex with a proper Peugeot disagostics tool and some knowledge of the 2l HDI diesel?